A new feature called Histroy Vault was seen in the M2 build of Windows8. It is a feature, very similar to Apple`s Time Machine, which allows user to go back in time and retrieve data and files that are previously modified or deleted.
History Vault lets you to backup files and data using shadow copy function of Windows. There is a timeline at the lower end of the interface, which allows you to go back to any specific date or time and restore the file.
Shadow Copy function was inherent from Windows Vista onwards but was hardly used by people. With this new UI, it becomes easier for user to backup and restore the data.
Moreover, Microsoft has reverted from Blue Screen of Death to Black Screen of Death. It might be a temporary one like in Windows 3.x when DOS applications failed to execute. If you remember, earlier builds of Windows7 and Windows98 had Red Screen of Death. So, we might see Microsoft coming back to Blue Screen in beta or final releases.
Another noteworthy feature in Windows8 is its Metro Style immersive browser. The browser offers a very compact UI, with limited options like back button, forward button, address bar, favicon and refresh button. It restricts unnecessary features and emphasizes only on browsing.
For more details regarding Windows 8, stay tuned with Windows7Buzz.